Method for producing a metal oxide, zinc oxide solid solution particles, a method of manufacturing a spherical powder, manufacturing method, and cosmetics manufacturing method of coating spherical powder

摘要

PROBLEM TO BE SOLVED: To provide: metal oxide-zinc oxide solid solution particles controllable of a particle size and a form by a simple, inexpensive and environment-friendly method; and coated spherical powder formed by coating, with a hydrophobic compound, the surface of spherical powder obtained by aggregating the metal oxide-zinc oxide solid solution particles, and to provide a cosmetic having an excellent feeling of use by formulating the coated spherical powder.;SOLUTION: This invention relates to: spherical powder which is produced by mixing a water-soluble zinc compound, glycol, an amine compound, and one or two or more kinds of metal salts having a charge of ≤+4, by performing a soft solution reaction at 50°C-100°C, and by accumulating metal oxide-zinc oxide solid solution particles with a primary particle size of 2-200 nm; and which has a spherical form with the size of 10-5,000 nm; or to coated spherical powder which is formed by using spherical powder obtained by firing the spherical powder at 300°C-1,500°C, and by coating the surface of the spherical powder with one or two or more kinds of compounds selected from polysiloxane, an alkyl alkoxysilane compound, an alkyl titanate compound and a fluorine compound. A cosmetic formed by formulating the coated spherical powder is also provided.;COPYRIGHT: (C)2013,JPO&INPIT